Vibration reducing device



Aug. 18, 1931. J. A. WILTSE VIBRATION REDUCING DEVICE Filed Jan. 8. 1930J.A.Wiltse Patented Aug. 18, 1931 UNITED STATES PATENT OFFICE JEROME A.WILTSE', F FREMONT, NEBRASKA, ASSIGNOR TO THE VIBBAGHEK. COMI- PANY, OFFREMONT, NEBRASKA VIBRATION REDUCING DEVICE Application filed January 8,

This invention relates to a vibration reducing device particularlyadapted for use in connection with internal combustion engines or thelike vibration producing ma chines.

An object of the invention is to provide a means whereby the vibrationgenerated by the moving reciprocating parts of an internal combustionengine will be partially elimiw nated and thereby eliminate or reducethe annoying rumbling noises generated wlthin a sedan body of anautomobile.

Another object of the invention is to provide a means whereby the smallfittings of an automobile, such as bolts and nuts, will be preventedfrom becoming loosened and subsequently lost.

A still further object of the invention is to increase the horse powerof engines.

A primary object of the invention is to provide a device which willreduce the vibration generated by .an internal combustion engine, saiddevice to be readily attachable by the owner or user of the engine orautomobile after the latter has been manufactured.

Other and further objects and advantages of the invention will beunderstood from the following detailed description, reference 3 beinghad to the accompanying drawings wherein:

' Figure 1 is a side view of an internal combustion engine andautomobile frame certain parts thereof being broken away and showing insection, the new device being shown in section and applied to the enginein a position of use.

Figure 2 is an end view of the engine and device shown in Figure 1. Y

Figure?) is a face view of an asbestos cushion employed.

Figure 4 is an end view of a resilient bushmg. Y

Referring now to the drawings for a more particular description in whichlike numerals of reference designate like or corresponding partsthroughout the several views, the numeral 10 indicates generally aninternal-combustion engine of any conventional 60 type. The engine isprovided with a crank 1930. Serial No. 419,442.

shaft 11 having a plurality of cranksor throws 12, some of which areindicated by dotted lines. A fly wheel 13 is, in accordance with theconventional practice, rigidly secured to the crank shaft 11.

The engine is provided with a plurality of reciprocating pistons 14,which are adapted to communicate motion to the crank shaft through theirconnecting rods 15. The engine may be of the internal combustion typeand provided with the conventional arrange ment of a carburetor, anintake manifold, an exhaust manifold, spark plug and a source of fuelsupply, not shown. The piston 14 is adapted to have reciprocatingmovements within the walls of its cylinder 16 in a Wellknown manner.

The new device comprises a standard or support 17 which is preferablyformed circular in plan and secured to a plate 18. The faces of thestandard are preferably smooth and in alignment or vertical parallelismwith respect to each other, as shown in Figure 1.

The plate 18 and the standard is rigidly secured to the engine by meansof suitable bolts or keepers indicated at 19. The plate may be of anysuitable size or configuration to accommodate the several variousconventional types of engines in use today and it will be understoodthat the plate may be secured to the engine at any suitable location.

The preferred position of the new device is on top of the engine, sincewhen so positioned it is out of the way of the engine accessories 5heretofore mentioned.

Thesupport 17 is preferably provided with a central bore 20, withinwhich a sleeve or bushing 21 may be fitted.

The bushing '21 is preferably formed of resilient material such asrubber and is provided with a central bore or aperture 22 which isadapted to receive an elongated shaft or bolt23.

Preferably two weights are slidingl y carried by the bolt 23; Theweights 24, for convenience of assembly upon the bolt 23, are w providedwith elongated apertures 25 which are adapted to snugly receive the bolt23.

A cushion 26 which is preferably formed of material such as asbestosclutch linings is positioned between each weight 24 and the opposedfaces of the standard or support 17 for purposes later described.

The bolt 23 is provided with a head 27 which is adapted to prevent theadjacent weight from moving an undesired distance away from the support17. The shank of the bolt opposite to its head 27 is provided with screwthreads and is adapted to receive a rotatable nut 28. A washer 29 ispreferably positioned upon the bolt between said nut and the head of thebolt. A resilient normally expanding spring 30 is carried by the boltand is adapted to exert pressure between the washer and the adjacentweight. A cotter pin 31 is preferably provided and received adjacent theend of the bolt forv the purpose of preventing unauthorized persons fromreadily removing the nut 28. i

It is well known that vibration is particularly noticeable in fourcylinder engines. The new device is adapted to oppose, neutralize andminimize vibration created by the engine, said opposition to said motionbeing in a plane parallel to the face of the support 17.

It is Well known that the main part of the movements created by thevibration of the engine istransversely of the engine or of the frame 32of the automobile.

In operation the reciprocation of the pistons within the engine sets upa vibration thereby shaking all parts of the automobile.

When the new device is installed as above described the weight orweights will have corelative movements with respect to said vibratorymovements of the engine and will neutralize, orminimize said lattermotion on account of the weights contacting, in alt-ernation, with thesupport. The shims or cushions 21 prevent undue wear, seizure orfreezing port.

The nut 28 may be adjusted to provide a desired tension of the spring 29to accommodate the individual requirements of aparticular engine. videmeans whereby the weights may move away from the fsupport a slightdistance and be returned toward the support by means of a resilientmember such as the spring.

From the foregoing description it is thought to be obvious that avibration reducing device constructed in accordance with my invention isparticularly well adapted for of the weights with their sup- Thedesideratum is to pro- .ried by the support adapted to be actuated inmovements where-by on the movement of the support in one direction, theweight is disposed against the support and on the movement of thesupport in the opposite direction, the weight is disposed away from thesupport, whereby vibratory movements of the engine are adapted to bereduced by the said movements of the weight.

2..A vibration reducer for a mounting on an engine,comprising a rigidsupport carriedby the engine, a shaft carried by the support, and aweight slidingly carried by the shaft.

3. A vibration reducer for a mounting on an engine, comprising a rigidsupport carried by the engine, a weight carried by the support, andmeans for causing the weight to normally engage the support.

4:; A vibrationreducer for a mounting on an engine, comprising a supportrigidly secured'to the engine, a threaded shaft carried by the support,a weight slidingly received upon theshaft, a spring carried by the shaftfor causing the weight to normally engage the support, and meansincluding a rotatable nut upon the shaftfor adjusting the tension of thespring. I

5.- A vibration reducer for a mounting on an engine, comprising a rigidsupport carried' by the engine, a weight slidingly carthe support andthe weight.

In testimony whereof, I have aifixed my use by reason of the convenienceand facility with which it may be assembled and operated, and it willalso be obvious that my invention is susceptible of some change andmodification without departing from the spirit and principles thereofand for this reason I do notwish it to be understood as limiting myselfto the precise arrangement and ried by the support, and a cushionbetween 1

